If you've managed to install Mac OS X Lion (if not, read this) you may have had a few migration issues. If that's the case, well, sorry! If you haven't upgraded yet, however, you'll want to at least update Snow Leopard to Apple's second try with version 10.6.8. This new supplemental update is said to remedy some of the Lion upgrade and migration issues users have encountered. If you haven't installed Lion yet, be sure to run system update first (or hit up MacRumors for direct download links).